A/C Not Blowing Cold Air...among other things

[PhilD424]

Originally Posted by yarisitis

I know the cooling fan is working because I can hear it turn on and off.

I'm not sure what the thermostat is, and what it does by opening and how it affects the A/C. Can you explain this to me?

Is there anything I should check for physically under the hood? I read somewhere that you can check a pipe coming from the A/C compressor while you have the car running with the A/C on and if you feel the pipe is cold then it should be working right, and if it's not cold then there might be a pressure or freon issue. Anyone know about this?

The thermostat is a circle that opens and closes in the upper radiator hose mount that goes into the block. When the engine is cold and the coolant is cold, it does not allow coolant to flow into the radiator. If your thermostat is mal-functioning then it won't open to allow the coolant to go through and be cooled and it overheats the engine. You could also have a bad water pump. Pull out the thermostat and re-connect the hose and see if it still overheats. If I were you'd I leave the thermostat out it provides better flow. Only downside is it will take longer to warm up in the winter but 4 bangers warm up quick anyway.